<template>
	<page-container title="更换头像">
	    <el-upload
	      ref="uploadRef"
	      :auto-upload="false"
	      class="avatar-uploader"
	      :show-file-list="false"
	      :on-change="onSelectFile"
	    >
	      <img v-if="imgUrl" :src="imgUrl" class="avatar" />
	      <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
	    </el-upload>
	
	    <br />
	
	    <el-button
	      @click="uploadRef.$el.querySelector('input').click()"
	      type="primary"
	      :icon="Plus"
	      size="large"
	      >选择图片</el-button
	    >
	    <el-button
	      @click="onUpdateAvatar"
	      type="success"
	      :icon="Upload"
	      size="large"
	      >上传头像</el-button
	    >
		<el-button @click="cl">打印</el-button>
		<!-- <div ref=''>
			<p v-for="index in 10" ref="div">{{index}}</p>
		</div> -->
	  </page-container>
	  
</template>

<script setup>
	import PageContainer from '@/components/PageContainer.vue'
	import { ref } from 'vue'
	import { Plus, Upload } from '@element-plus/icons-vue'
	import { useUserStore } from '@/stores'
	import { userUpdateAvatarService } from '@/api/user'
import { nextTick } from 'vue'
	
	const userStore = useUserStore()
	const imgUrl = ref(userStore.user.user_pic)
	const uploadRef = ref()
	const div = ref()
	
	const onSelectFile = (uploadFile) => {
		// imgUrl.value = URL.createObjectURL(uploadFile.raw) // 预览图片
		
	  // 基于 FileReader 读取图片做预览
	  const reader = new FileReader()
	  reader.readAsDataURL(uploadFile.raw)
	  reader.onload = () => {
	    imgUrl.value = reader.result
	  }
	  
	  
	}
	
	const onUpdateAvatar = async () => {
	  // 发送请求更新头像
	  //上传需要FileReader格式
	  await userUpdateAvatarService(imgUrl.value)
	  // userStore 重新渲染
	  await userStore.getUser()
	  // 提示用户
	  ElMessage.success('头像更新成功')
		
	}
	
	function cl(){
		console.log(uploadRef.value.$el.querySelector('input'))
		uploadRef.value.$el.querySelector('input').click()
		// uploadRef.value.handleStart()
	}
</script>

<style lang="scss" scoped>
.avatar-uploader {
  :deep() {
    .avatar {
      width: 278px;
      height: 278px;
      display: block;
    }
    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }
    .el-upload:hover {
      border-color: var(--el-color-primary);
    }
    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 278px;
      height: 278px;
      text-align: center;
    }
  }
}
</style>